package org.study.tomcat_study.demo.servlet.simple;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.util.Enumeration;
import java.util.Locale;
import java.util.Map;

import javax.servlet.AsyncContext;
import javax.servlet.DispatcherType;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletInputStream;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class Request implements ServletRequest{

	private InputStream input;
	
	private int _2MB = 2<<10;
	
	private String uri;
	public Request(InputStream input) {
		this.input = input;
	}
	
	public void parse() {
		StringBuffer request = new StringBuffer(_2MB);
		int i;
		byte[] buffer= new byte[_2MB];
		try {
			i= input.read(buffer);
		} catch (IOException e) {
			e.printStackTrace();
			i=-1;
		}
		uri = parseUri(new String(buffer));
	}
	
	private String parseUri(String requestString) {
		int index1,index2;
		index1 = requestString.indexOf(' ');
		if(index1!=-1) {
			index2 = requestString.indexOf(' ',index1+1);
			if(index2>index1)
				return requestString.substring(index1+1, index2);
		}
		return null;
	}
	
	public String getUri() {
		return uri==null?"":uri;
	}
	
	@Override
	public Object getAttribute(String name) {
		return null;
	}
	@Override
	public Enumeration<String> getAttributeNames() {
		return null;
	}

	@Override
	public String getRealPath(String path) {
		return null;
	}

	@Override
	public RequestDispatcher getRequestDispatcher(String path) {
		return null;
	}
	@Override
	public boolean isSecure() {
		return false;
	}
	@Override
	public String getCharacterEncoding() {
		return null;
	}

	@Override
	public void setCharacterEncoding(String env) throws UnsupportedEncodingException {
		
	}

	@Override
	public int getContentLength() {
		return 0;
	}

	@Override
	public long getContentLengthLong() {
		return 0;
	}

	@Override
	public String getContentType() {
		return null;
	}

	@Override
	public ServletInputStream getInputStream() throws IOException {
		return null;
	}

	@Override
	public String getParameter(String name) {
		return null;
	}

	@Override
	public Enumeration<String> getParameterNames() {
		return null;
	}

	@Override
	public String[] getParameterValues(String name) {
		return null;
	}

	@Override
	public Map<String, String[]> getParameterMap() {
		return null;
	}

	@Override
	public String getProtocol() {
		return null;
	}

	@Override
	public String getScheme() {
		return null;
	}

	@Override
	public String getServerName() {
		return null;
	}

	@Override
	public int getServerPort() {
		return 0;
	}

	@Override
	public BufferedReader getReader() throws IOException {
		return null;
	}

	@Override
	public String getRemoteAddr() {
		return null;
	}

	@Override
	public String getRemoteHost() {
		return null;
	}

	@Override
	public void setAttribute(String name, Object o) {
		
	}

	@Override
	public void removeAttribute(String name) {
		
	}

	@Override
	public Locale getLocale() {
		return null;
	}

	@Override
	public Enumeration<Locale> getLocales() {
		return null;
	}

	@Override
	public int getRemotePort() {
		return 0;
	}

	@Override
	public String getLocalName() {
		return null;
	}

	@Override
	public String getLocalAddr() {
		return null;
	}

	@Override
	public int getLocalPort() {
		return 0;
	}

	@Override
	public ServletContext getServletContext() {
		return null;
	}

	@Override
	public AsyncContext startAsync() throws IllegalStateException {
		return null;
	}

	@Override
	public AsyncContext startAsync(ServletRequest servletRequest, ServletResponse servletResponse)
			throws IllegalStateException {
		return null;
	}

	@Override
	public boolean isAsyncStarted() {
		return false;
	}

	@Override
	public boolean isAsyncSupported() {
		return false;
	}

	@Override
	public AsyncContext getAsyncContext() {
		return null;
	}

	@Override
	public DispatcherType getDispatcherType() {
		return null;
	}
	
}
